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USDA is maintaining a round-the-clock response as New World screwworm activity rises in parts of the US Southwest. Officials say warm, wet conditions and recent rainfall in New Mexico, Arizona, and Texas favor fly activity, and emphasize surveillance, trapping, and prompt reporting.
Further spread could disrupt livestock movement and trade and raise animal-health and control costs for producers. If infestations affect cattle, risks to herd productivity and beef supply could support cattle prices, though the article reports no quantified production losses.
drovers.comNov 6, 2026After 148 past bullish disease events, Live Cattle moved a median +0.4% over 5 sessions (62% higher; middle half -0.5% to +1.2%), and +1.4% over 20.
After 122 past bullish disease events, Feeder Cattle moved a median +0.4% over 5 sessions (60% higher; middle half -1.0% to +1.6%), and +2.0% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
